Noda Akira married a draft-sensor to a blue LED and miniaturized the package so that it would fit in his nostril. The result is a nasal prosthesis that lights up his nostril with eerie blue light every time he breathes through his nose.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.